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Record Details

Record 49 of 2589
Optical Processing With Photorefractive Semiconductors
Author and Affiliation:
Cheng, Li-Jen(Caltech)
Gheen, Gregory(Caltech)
Abstract: Experimental phase-conjugate four-wave-mixing apparatus used to demonstrate capabilities of GaAs (and potentially of other photorefractive semiconductors like InP and CdTe) for optical processing of information. With modifications, performs any of three basic image-processing functions: transfer to different light beam, enhancement of edges, and autocorrelation. Includes crystal of GaAs of 5 by 9 by 9 mm with cubic crystalline axes. Advantages include high speed and compatibilty with other semiconductor devices.
Publication Date: Aug 01, 1989
Document ID:
19890000399
(Acquired Nov 04, 1995)
Accession Number: 89B10399
Subject Category: PHYSICAL SCIENCES
Report/Patent Number: NPO-17324
Document Type: NASA Tech Brief
Publication Information: NASA Tech Briefs (ISSN 0145-319X); 13; 8; P. 37
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ELECTRO-OPTICS; GALLIUM ARSENIDES; IMAGE PROCESSING
Availability Source: National Technology Transfer Center (NTTC), Wheeling, WV
Availability Notes: Additional information available through: National Technology Transfer Center (NTTC), Wheeling, WV 26003, (Tel: 1-800-678-6882).
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